Description: I often attach an MP3 audio file of a bird singing to a photo of the bird in an Impress slide. But I have noticed that sometimes the audio file is shortened (i.e., does not play completely) during the presentation. This problem seems to relate to the audio quality (bit rate in kbps) of the MP3 file. (Audio quality: I edit my audio files in Audacity and then export them to MP3. Audacity offers options for audio quality of the variable bit rate files, expressed as ranges of kilobits per second. The lowest quality, 45-85 kbps, generates the smallest files. Although those files play to full length in a Windows audio player, they are shortened to a little more than half of their actual length during an Impress presentation.) I will provide an example presentation that illustrates the problem, along with three audio files. (I have duplicated the behavior on two different Windows computers.) Steps to Reproduce: 1. In a new Impress presentation, add a slide and insert an image. (Probably not necessary to show bug, but it's what I do.) 2. Add a text box to the slide. Add a Custom Animation effect to the text box. Choose animation effect, start, duration, and delay, as desired. On Effect Options, choose a sound file with high, medium, or low audio quality. (See attachments for the files I tested.) 3. Start the presentation. Note the length of the sound when it plays. 4. If desired, add other slides with different quality sound files. Actual Results: Sound files with "best quality" (e.g., 220-260 kbps as stored from Audacity) play completely in an Impress presentation. Sound files with low quality (e.g., 45-85 kbps) are significantly shortened: 8.3 seconds rather than the full 12 seconds in my test. Expected Results: Impress should play sound files in full (as Windows Media Player does), regardless of the audio quality. Reproducible: Always User Profile Reset: No Additional Info: Version: 7.3.6.2 (x64) / LibreOffice Community Build ID: c28ca90fd6e1a19e189fc16c05f8f8924961e12e CPU threads: 4; OS: Windows 10.0 Build 19043; UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded
Created attachment 183021 [details] Example Impress presentation with three slides, demonstrating the problem. The three photographs in this presentation (Great Kiskadee) have attached sound files, each 12 seconds long with five songs of the Great Kiskadee. Details and results: Quality "Lame VBR quality" Impress plays 220-260 kbps 0 All five songs (12.0 sec) 80-120 kbps 7 First four songs and one note of fifth (~11.3 sec) 45-85 kbps 9 First three songs (~8.3 sec) "Lame VBR quality" is as displayed by Exiftool. There are other parameters that differ between the files. The three audio files are attached separately.
Created attachment 183023 [details] Great Kiskadee sound, best quality (220-260 kbps)
Created attachment 183024 [details] Great Kiskadee sound, medium quality (80-120 kbps)
Created attachment 183025 [details] Great Kiskadee sound, low quality (45-85 kbps)
No sounds play for me in the attached presentation. Testing with the low quality (45-85 kbps) file, it plays fully for me after I insert it into Impress. On Windows, I have these codecs: https://github.com/Nevcairiel/LAVFilters/releases Do you still see this issue with 7.5? If so, which codecs do you have and do those LAV Filters help? Set to NEEDINFO. Change back to UNCONFIRMED, if the problem persists. Change to RESOLVED WORKSFORME, if the problem went away. Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: ab20dba30769a5a52830220daa347772485db6a2 CPU threads: 2; OS: Windows 10.0 Build 22621; UI render: Skia/Raster; VCL: win Locale: en-US (en_FI); UI: en-US Calc: threaded Arch Linux 64-bit, X11 Version: 7.6.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: f12e547c42103a3b934b393b6b63c2b096bbd06e CPU threads: 8; OS: Linux 6.1; UI render: default; VCL: kf5 (cairo+xcb) Locale: fi-FI (fi_FI.UTF-8); UI: en-US Calc: threaded Built on 24 February 2023
Buovjaga, I apologize for the delay. I'm getting ready for a presentation, so I would rather not upgrade to 7.5 yet. I'll answer your questions when I have a chance to upgrade.
[Automated Action] NeedInfo-To-Unconfirmed
(In reply to David F Smith from comment #6) > Buovjaga, I apologize for the delay. I'm getting ready for a presentation, > so I would rather not upgrade to 7.5 yet. I'll answer your questions when I > have a chance to upgrade. I would still like to know about the codecs you use. Normally it is always about them and not LibreOffice itself.
Created attachment 186727 [details] Screenshot of my audio codecs, as of 17-Apr-2023 (Windows 10) In answer to buovjaga's question in comment 8
(My understanding of codecs is rudimentary. I (re)install the KLite pack when I think there is a need to. I have just posted here a screenshot of the currently installed list of audio codecs.) For what it's worth, the behavior I see on this issue is still exactly the same as in my original report. I currently have the following: Version: 7.4.6.2 (x64) / LibreOffice Community Build ID: 5b1f5509c2decdade7fda905e3e1429a67acd63d CPU threads: 4; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded
(In reply to David F Smith from comment #9) > Created attachment 186727 [details] > Screenshot of my audio codecs, as of 17-Apr-2023 (Windows 10) > > In answer to buovjaga's question in comment 8 Ok, I recommend to try LAV Filters like I explained in comment 5
David, were you able to test again with version 7.5 or 7.6, and with the codecs recommended by Buovjaga?
Dear David F Smith, This bug has been in NEEDINFO status with no change for at least 6 months. Please provide the requested information as soon as possible and mark the bug as UNCONFIRMED. Due to regular bug tracker maintenance, if the bug is still in NEEDINFO status with no change in 30 days the QA team will close the bug as INSUFFICIENTDATA due to lack of needed information. For more information about our NEEDINFO policy please read the wiki located here: https://wiki.documentfoundation.org/QA/Bugzilla/Fields/Status/NEEDINFO If you have already provided the requested information, please mark the bug as UNCONFIRMED so that the QA team knows that the bug is ready to be confirmed. Thank you for helping us make LibreOffice even better for everyone! Warm Regards, QA Team MassPing-NeedInfo-Ping
Apologies for my delayed response, and thanks for the nudge. I upgraded LibreOffice: Version: 7.6.6.3 (X86_64) / LibreOffice Community Build ID: d97b2716a9a4a2ce1391dee1765565ea469b0ae7 CPU threads: 4; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win Locale: en-US (en_US); UI: en-US Calc: threaded Then I ran my test presentation again, with the same incorrect behavior as in my Comment 1. Then, at Buovjaga's suggestion, I downloaded and installed LAVFilters 0.79.2 from https://github.com/Nevcairiel/LAVFilters/releases and restarted LibreOffice. Now my test presentation works correctly: all three of the sound files play completely. I am even more ignorant of all things Codec than I thought I was, because I don't know how to verify that what I installed (Codecs? Filters?) is actually being used. But regardless, the behavior of my attached sounds is now correct, so I'm happy. Thanks to all, especially Buovjaga.